Improvement in propelling devices for vessels



e. R. MOORE.

vI n'zprevement in Propellng Devices for Vessels.

N0. 129,488, Patentedluly16,1872.

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! P/QM) line at the stern of the boat.

UNITED STATES PATENT OFFICE.

GEORGE P.. MOORE, OE PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN PROPELLING DEVICES FOR VESSELS.

I, GEO. It. MOORE, of Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain Improvements in 'Machineryfor Propelling Boats, of which the following is a specication:

The object of my invention is to provide machinery to be operated bysteam or other power for propelling boats. I seek to obtain efficiencywithout producing unreasonable shorewash. 'In this instance thecharacteristic machinery of my device is all connected with a horizontalvibrating bar about as long as the width of the boat. This bar is hungcentrally in a right-angled double joint below the water- From eitherend of this bar toward the center there are looselyhinged wings inpairs, opening and closing as jaws. There are also fixed stays upon thebar which determine just how far the wings may iopen or close. Also, ari ght-an gled stem from the center of the bar, with which a lever isconnected for giving it the half turn required to reverse the win gs andchange the direction of their force. The hinged side of the wings mustalways be in the direction the boat is designed to move.

It will be seen, as the bar vibrates horizontally, in this case, thewings open and close vertically. A rapid vibration of the bar in an arcof about thirty degrees will cause the splashes of the right and leftpairs of wings to be thrown in broad circles, having some tendency toeX- pend themselves against each other. A connecting-rod from the bar toa pivoted upright lever for'the hand, near the bow of the boat, is theonly means shown here for vibrating the bar; but the application of anyknown force is simple and quite within the knowledge of any suitablemanufacturer. Doubtless the device I am presenting is capable of as manyvarieties of application as any other mode.

In my model and drawing a simple canalboat is represented with my wingedpropeller attached.

Figure 1 is a top view of a boat with my winged propeller attached atthe stern. The upper part of the boat at the stern is broken away tobring the propeller into view. Fig. 2 is a side view of the same, withthe bar B turned so that its appendages point outward and indicate theforce of the propeller to be used in that direction. Fig. 3 is the sameview with the bar B reversed, sov as to move the boat in the oppositedirection. Fig. 4 is a rear view, and shows the relative length of thewings. It indicates one pair of the wings open and the other. relativelyclosed.

A is a connecting-rod uniting the bar B with the pivoted upright leverC, through which motion can be communicated to the propeller. d d d dare fixed stays upon the bar B to stop the wings at that point. w w fw ware wings hinged loosely on the bar B. They are .in pairs, and in Figs.2, 3, and 4 one pair is represented as open and the other closed. E is alever pivoted to a stem upon the bar B for giving it a half turn, andthus reversing the wings. F is a frame-work from the bottom of the boat,and terminates in a socket, S, for the reception of the stem-part of theright-angled double joint G, which carries the horizontal bar B. H isthe ordinary helm.

I claim as my invention- 1. In combination with navigable vessels, thepropelling device consisting of the oscillating horizontal beam Bprovided with stops d d, with the two pairs of hinged paddles or wings ww, when arranged for operation, substantially as and for the purposeherein set forth.

2. In combination with such propeller, the

lever E and arm for reversing the motion of said wings, substantially asand for the pur-v poses herein set forth.

GEO. R. MOORE.

Witnesses: l

TIIO. DALLAS,

JOHN PERRY.

